Learn More About Our Staff

Portrait of Multnomah Medical staff member Brent Jaffe

Brent Jaffe


Brent lives in Vancouver, Washington with his family and two dogs. He has a passion for giving back to the local community, volunteering and fundraising at numerous organizations such as the American Cancer Society. Brent carries this compassion into the care and treatment of our patients.

Portrait of Multnomah Medical staff member Peter O'Hanley, PhD, MD, MPH

Peter O'Hanley, PhD, MD, MPH

Medical Director

Peter is excited to serve as the Medical Director for the Multnomah Clinic. This will allow him to continue to engage patients about their health status and problems as a knowledgeable, hard-working physician to assure that they are getting thorough professional care. His personality reflects someone who is humble, forthright, and respectful. He expects his patients to be candid and express any of their questions, concerns, or complaints so that he can best resolve their concerns in an empathic fashion. Peter received his BA in Zoology from Pomona College in 1972 where he also enjoyed playing football and rugby. He received his PhD in Anatomy/Immunology and MD from the Medical University of South Carolina, Charleston, in 1978 and 1979, respectively. He received his MPH in Epidemiology & Statistics from the University of California, Berkeley, in 1996, his internal medicine house staff training at Providence Portland Medical Center in Oregon and Stanford University, finally serving as the Chief Resident in Internal Medicine at Stanford University in 1984-1985. Fellowships in Infectious Diseases and Medical Microbiology between 1981 and 1984 at Stanford University, 14 years at Stanford University School of Medicine ultimately as a tenured professor between 1985 and 1998 in the Department of Internal Medicine, Division of Infectious Diseases and Geographic Medicine and the Department of Microbiology.

Portrait of Multnomah Medical staff member Danny Zhao

Danny Zhao

Lead Medical Technician

Danny Zhao is a Nationally Registered and Oregon State Certified Paramedic. He is passionate about delivering quality patient care and enhancing patients' experience. He thrives in any medical setting as both an experienced care provider and an healthcare advocate and is always looking for opportunities to listen and communicate.

Portrait of Multnomah Medical staff member Rebeca Nelson-Aguilera

Rebeca Nelson-Aguilera

Medical Technician

Rebeca is a Certified Nursing Assistant with backgrounds in art and advertising. She prides herself on making people comfortable through her laid-back nature and kind presence. She enjoys her free time with her husband and two doggies along with travel, art, and music. She’s the clinic’s native Spanish-speaker. ¡Mucho gusto!

Portrait of Multnomah Medical staff member Todd Nelson-Aguilera

Todd Nelson-Aguilera

Registered Nurse

Todd is a registered nurse with a master’s degree in nursing education. He has over 14 years of bedside nursing experience, the last 11 of which have been in ICU. He also teaches bachelors nursing students for an accredited online university. He has worked as a travel nurse across four states and has cared for a wide variety of patients. He is married with two dogs and enjoys travel, music, art, education, and connecting with others. He will be the first one to take you back into the office and prides himself on being kind and approachable.

Portrait of Multnomah Medical staff member Brian Allen

Brian Allen

Office Manager

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